Is there anything close to the story of Sam and Bolt?
https://www.metabods.com/stories/sam-and-bolt
Muscle and cock growth, gym, locker and sauna scenes, cum inflation, workouts and more muscle growth or many characters. Any help appreciated!

Thx @Astromuscle for the continuation. It turned out amazingly...
My first night
I had gone in my room and jacked off once or twice more. I was in heaven, but the idea of living with that muscle monster, along with Mark who wasn’t bad looking himself. He had been right, I could see where he got his looks and muscle from. I even found myself cursing his mother for diluting the genes he got from his father. How could she even leave someone like that?! He’s hot, but not only that he seemed nice. I took a nap, and when I got up I could smell food cooking. I was led by my nose upstairs to find the big man himself stirring a pot full of what was now a distinct enough smell that I could tell it was chili. Mark wasn’t around and Rent hadn’t noticed me. I was overcome by embarrassment, and began to go back down the stairs.
“You don’t have to run away. It’s fine. I’m making food for all of us, and it will be ready in a couple minutes. May as well sit down at the table.” The deep voice assaulted me from behind. I looked down the stairs. He sounded like this was weird for him too. I debated just leaving anyways. I could pack up my bag, travel back home for spring break. I sighed and came back around. I avoided looking at the muscle man, walking up, only to see his feet, bare, thick and covered in veins, like I should have known they’d be. Dear god those things are some of the biggest I’ve ever seen. Could there be something about him that didn’t completely arouse me? I blink but keep looking down, figuring this was better than seeing the rest of him.
“Sir, I am so sorry for what I did. I shouldn’t have done that. It was disgusting and disrespectful and completely inappropriate. I can pack my bag tonight and head out in the morning, if you want.”
I heard him give a deep sigh, and watched his weight shift. “Listen kid. I’ve thought about it and I get it. I mean I was jacking off to myself too. Not gonna lie the idea the idea you were jacking off at the sight of me was pretty hot too.” I look up, Rent is blushing a little, but look right back down. “And gotta admit man you knew exactly how to press my buttons to finish me off.”
I smile a little and give a shy uncertain laugh. It shocked me when his hand came into view and grabbed my chin, turning it up. He did it quickly, but even then my eyes seemed to work quickly catching each part of him, thick legs that had been in my peripherals. Tight waist and huge bulge that his shorts draped over. Waist coming out wide quickly with lats, and then the chest kicking in and expanding his physique in every direction. Traps coming upleading from far out to latch onto the back of Rent’s head.
Rent’s face was not something I had had a lot of time to take in, but now he was forcing me to look at it. It was square and strong, even the muscles here looking ripped a little. A thick jaw led down to a strong chin. A short, well kept beard was there following the jawline, and going around his lips, which were thick and full. A relatively small nose took up the middle of his face, and above those were deep brown eyes, like the bark of a strong oak or maple. Even his forehead was almost squared off, and he had a military buzz cut. Over his temples and on some of his forehead even at rest I could see veins snaking their way about. This face would scare me shitless if it were angry at me.
This face wasn’t angry though. Rent was looking into my eyes and had a slight smile. He still had some colour in his cheeks from blushing a second ago. “You don’t have to leave. You can stay, and maybe I can even show you how to pick up a weight properly without dropping it on me”
I interject, “That was on purpose to cover you before Mark came in”
Rent’s smile widens a little, as if about to laugh. “Do you mean to say if we went downstairs right now you could lift that dumbbell and not drop it? If you say yes I will call your bluff, so pick your words carefully”
I think about it, I had been in a rush and only had to lift it a little and did so quickly. I remember that it had actually been quite difficult and almost didn’t get it all the way over Rent’s side. “Fine, I admit it was very heavy.”
Rent put his hand on my shoulder, his smile turning sweeter. “Admitting that is the first step. Good job. I don’t think I could throw you out of the house anyways, your face is too cute.” Rent removed his hand from me, and I felt a weight lift off me. Had just his hand been that heavy?! My dick twinged a little. Fuck this is going to be a tough week, I think as I watch Rent prepare three bowls of chili from the pot. Two are regular size, but one is definitely a mixing bowl he is filling up high.
Rent sees your gaze and laughs. “It takes a lot of food to keep this ship sailing. Don’t you worry, I won’t get fat off it.” He sets the two bowls down and calls for Mark. I sit down and watch him walk and grab the last bowl. My god he’s almost waddling, each ass cheek filling the space the other is leaving behind. I am very thankful I am already sitting down at the table, because I am getting boned up just watching.
Mark comes out of his room to sit with us. “Dear god dad got enough chili there?”
Rent laughs at his sons comment. “Is everyone getting on my case about how much I’m eating? I plan to have dessert later too…”
Mark laughs, while I’m just struck by these two muscle men talk. “Dad you eat like that and you will get fat. Even you can only handle so many calories.”
“Tell you what little man o’ mine. You get to be as big as me without eating this much, and I’ll reconsider. Until then keep lifting your kiddie weights.” I would have suspected this to be said arrogantly, but Rent had a sweet tone to his voice and Mark laughed so deeply, I figured that was just their relationship.
Mark looked over at me. “What does that make the weights Tommy uses dad?” I watched as Marks chair moves and he almost falls out of it.
“I did not raise a son who makes fun of others or feels superior because he can lift more. We kid, but you will not make fun of someone who is doing their best and is starting out.” Rent looked over at me, eyes kind. “I’m sorry about that. We tease but I don’t make fun when people are lifting heavy, no matter the weight.”
I blink, having really not taken offense to anything. “That’s ok. Honestly it’s not like I don’t think the same when I lift with Mark there. I bet with your physique-” I stumble on the word a little, a mental image of everything I had seen coming to mind, but I only slow for a second. “-with your physique I’m sure he must feel like I do.” Mark nods in agreement.
Rent keeps asking questions about me, and about how we are both doing at school. Jokes were thrown around all night and I actually managed to distract myself in the conversation enough for me to get up in the end and not be worried they might see me hard.
Rent excused himself after dinner was done to finish the workout I had interrupted and Mark and I cleaned the dishes. I washed and Mark put them away. I thought about Rent downstairs lifting, and occasionally heard a grunt come from the stairwell.
“Sounds like a monster coming from down there, right?”
I look over at Mark. He was also staring down there. “My big man is just so strong and powerful. I look up to him a lot.”
My tongue works for a sec. “Makes sense, he is something else man. Not how I pictured him though.”
Mark looks confused. “Didn’t I tell you he was bigger than even me?” Mark goes into a double bicep pose. “Hard as that might be to believe.” My jaw drops a little. It was easy to forget next to Rent how large and muscular Mark was, his biceps like two cannonballs held in a boat of tricep.
I look away and try to recover. “That’s not what I meant. I meant he’s not cocky. He just seems cool. He’s aware of who he is, but he doesn’t flaunt it that much, except to you.” At that I turn to him. “But that seems like it’s to put you in your place, and motivate you.”
“Put me in my place? What do you mean?”
I look over to him, and hold up his arm, he flexes intuitively. “You are amazing physically, and I bet you always have been, especially with an influence like that in your life. You are also a great guy, so don’t take it personally when I tell you you are arrogant man. Makes people feel lesser.”
I kind of zone out remembering being bullied by people like Mark. I look up and see Mark’s face concerned. “Dude, you know I don’t feel that way. I flex because I’m proud of what I’ve worked for. To be honest I kinda thought you liked it when I flexed my muscles too.” He doesn’t seem as hurt as perhaps disappointed.
“Mark. Are you crazy? I do like when you flex, and I love seeing how proud you are of it. You deserve to be. You are huge, but I know you’re huge because I am smaller.” I pull the sink plug and watch the dirty water swirl away. “Anyways I didn’t mean anything by it. It’s not for you to worry about me. You develop a thick skin when you are small.” I dry my hands and wander off downstairs.
That was more intense then I meant for it to be. Hope Mark doesn’t take that too seriously. I need to breathe, I will check with him in the morning. I pass by the gym, and see Rent working out. I stop and see him bench pressing, chest muscles heaving up as he reracks the weight. I quickly turn around and head off to my room, closing the door behind me, trying hard not to think about the massive man there. I lean against the door, and am shocked to hear deep thumps against it, absorbed into my back.
I turn around and open the door. Rent is there, taking up the entire space. He is a little sweaty and in a stringer that reveals a lot of his upper body, thick, slick, bulky muscle hanging out huffing and puffing. “Listen Tommy, come work out with me.”
My jaw drops. “Work out? Next to you? Man I can’t even compare to you, why do you want to work out with me?”
Rent just smiles sweetly. “It doesn’t matter how much you lift. I want to see what kind of stuff you are made of. I feel like I can really tell what a man is like by how he lifts.” He breathes deeply “By which I mean ‘how’ not ‘how much’. No ego lifting, even with me there to spot.” God despite his body I could just get lost in that smile of his.
Rent turns and stalks off with his wide back, moving his legs out as he walks. I began to get hard again, but at this point in this house it was becoming the norm. I was nervous, but it wasn’t like Rent hadn’t already seen it. I came in and he did notice. “Doesn’t take much for you, huh? Try not to blow on my bench, K?”
I blush, shifting it away. Did Rent watch me adjust myself? Fuck now I’m imagining things. I look at the bench, loaded with several large plates on either side, and then a coupe small ones. 700lbs?! Just casually?! There were safety bars in place on the power cage, although I had a hunch that they weren’t intended to save you from a 700lb barbell falling. Rent began taking the weight off one side, and I mimicked him on the other.
“How much weight you want?” His face seemed to study me.
Fucking beast is testing me. I think for a second. “Empty bar.”
Rent smiles. “Smart boy! Sounds good to me.” Rent finishes and leans on the wall. I take off all my weight and slide under the bar. I check my form and position, and then grab the bar tightly. I unrack and bring the bar down slowly, and then shoot it up. Keep your shoulders on the bench, that’s the thing you are always messing up. I feel them coming up a little, and I readjust. The weight isn’t trying, but if this is a test like I wanted an ‘A’.
Rent began to straddle me so he was in view. Holy shit the view from down here… FOCUS! “What are you thinking about right now Tommy?”
“I’m trying to keep my shoulders on the bench.” I breathe, and then continue. “They always ride up and off the bench.”
Rent lightly touches the bar the next time it comes up and shifts it down closer to him. I follow it with my eyes making me look more at him. FOCUS FOCUS FOCUS. I could tell what my penis wanted me to focus on. “Try arching your back, activating your lats to keep your shoulders down, and pushing it up here over your shoulders, not over your neck.”
I make my eyes look at the bar instead of Rent, which was no easy feat. I control the bar down to my mid chest, and then push it up, this time more slowly to focus on the bar path making it come over my shoulders and then stop. The entire time I was straining my lats in the hopes my shoulders wouldn’t rise up. I rerack and breathe a little, it hadn’t been much weight but I did quite a few reps with the bar. Sweat was already forming on me and I was a little embarrassed at having such a little weight get to me. I slowly increased the weight until I got up to 135.
Rent went to straddle me again before I unracked. I am going to hate myself for saying this. “Rent buddy why are you going over me, instead of above my head?”
“I actually always feel a little cramped inside the cage, figured I could still help from out here. I don’t spot a lot of people other than Mark sometimes.”
“Rent… You know I’m gay… and you know you turn me on… It’s a little distracting having your body hanging over me. If you really do want me to lift my best you may have to not be there.” I blush so red I feel like I am turning into a tomato.
Rent looks down at himself, as if seeing his muscles for the first time, and then realizing what I was saying. “Damn, I guess that’s a good point.” Rent gets off me and I feel my lust pull me towards him. I force myself not to move. Fuck but having his body hanging over me was amazing. I unrack the weight, wobbling a little. I steady myself and bring the bar down, touch my chest, and then press it back up. Shoulders on the bench, touch mid chest, push to over the shoulders, no further. I press it back up about 5 times before my arms start to get weak. I force myself to go for one more, and before I am done Rent is back over me, hands under the bar without touching it.
“Go for one more. I am right here to catch it.”
I don’t even have enough breath to remind him how distracting he is. I take a big gulp of a breath, fix my position and lower the bar, shaking as I go down and touch it against my mid chest. It rests there a little heavier than I meant it to, but I begin pressing it up, getting it a little less than halfway before the bar stops moving. Don’t crane your neck, don’t compromise your form. Keep pushing. I push and push but the bar doesn’t move and it begins to fall again. Rent’s large hands go under the bar and lightly touch it, taking a couple pounds of weight. I redouble my efforts and concentrate on squeezing my chest. Rent wasn’t pulling that hard, but he was doing enough I got past the sticking point and locked out my elbows. Rent pushed the bar back into the rack and I let it go.
“Well a couple more sets like that and I’ll be toast.” I laugh a little, and feel my body touch his thighs. Fuck this position is torture. Rent looks down at me, face of joy.
“You gave that set your all, I’m proud of you.”
I give him an accusatory look. “Didn’t I mention how unhelpful you holding your body over me is? Kind of gives my brain the wrong idea.”
Rents facial expressions change in a second. Where before it was purely one of happiness, now there was something else… close to a hunger. He leans over, grabbing some bench supports for hand positioning as his body hangs horizontally over mine. “Who said it was the wrong idea?”
Dear god I know that look. It’s not hunger, it’s lust!
Rent lowered himself onto me. I was stunned.
“Boy I already know you like me. My son doesn’t know, but lately my tastes have become more… Well more like you.” Rent was beginning to lay part of his body on me, pressing my shoulder blades into the bench better than the bar had. Rent had his nads on the bar above me, his huge hard hands resting on it as two thick bulky arms hung over me, lowering his head towards mine. “You know, if you want to make out with an old fart like me”
My body almost moved on it’s own, not that I would have stopped it. I bent my head forward, and touched our lips together. Rent’s lips were firm but soft, working with mine as he lowered his head down so I could lay back.
...
TO BE CONTINUED...